mirror of https://github.com/sudo-project/sudo.git
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2007, 2010-2014
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* Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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#include <config.h>
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#ifndef HAVE_MEMRCHR
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#include <sys/types.h>
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#include <sudo_compat.h>
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/*
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* Reverse memchr()
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* Find the last occurrence of 'c' in the buffer 's' of size 'n'.
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*/
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void *
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sudo_memrchr(const void *s, int c, size_t n)
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{
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const unsigned char *cp;
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if (n != 0) {
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cp = (unsigned char *)s + n;
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do {
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if (*(--cp) == (unsigned char)c)
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return (void *)cp;
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} while (--n != 0);
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}
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return (void *)0;
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}
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#endif /* HAVE_MEMRCHR */
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